public static void Begin(VerticalPaneState prototype)
{
int id = GUIUtility.GetControlID(FocusType.Passive);
vState = (VerticalPaneState)GUIUtility.GetStateObject(typeof(VerticalPaneState), id);
vState.ResolveStateToCurrentContext(id, prototype);
// *INDENT-OFF*
Rect totalArea = EditorGUILayout.BeginVertical();
vState.availableHeight = totalArea.height - VerticalPaneState.SPLITTER_HEIGHT;
vState.isPaneHeightChanged = false;
if (totalArea.height > 0) {
if (vState.topPaneHeight < 0) {
if (vState.initialTopPaneHeight < 0)
vState.topPaneHeight = vState.availableHeight * 0.5f;
else
vState.topPaneHeight = vState.initialTopPaneHeight;
vState.isPaneHeightChanged = true;
}
if (vState.lastAvailableHeight < 0)
vState.lastAvailableHeight = vState.availableHeight;
if (vState.lastAvailableHeight != vState.availableHeight) {
vState.topPaneHeight = vState.availableHeight * (vState.topPaneHeight / vState.lastAvailableHeight);
vState.isPaneHeightChanged = true;
}
vState.lastAvailableHeight = vState.availableHeight;
}
GUILayout.BeginVertical(GUILayout.Height(vState.topPaneHeight));
// *INDENT-ON*
}
/*
* Some aspects of our state are really just static configuration that
* shouldn't be modified by the control, so we blindly set them if we have a
* prototype from which to do so.
*/
protected virtual void InitFromPrototype(int newId, VerticalPaneState prototype)
{
id = newId;
initialTopPaneHeight = prototype.initialTopPaneHeight;
minPaneHeightTop = prototype.minPaneHeightTop;
minPaneHeightBottom = prototype.minPaneHeightBottom;
}
/*
* This method takes care of guarding against state object recycling, and
* ensures we pick up what we need, when we need to, from the prototype state
* object.
*/
public void ResolveStateToCurrentContext(int currentId, VerticalPaneState prototype)
{
if (id != currentId)
{
Reset(currentId);
}
else if (prototype != null)
{
InitFromPrototype(currentId, prototype);
}
}
